Swanson Big 12 Speed S0107 Framing Square, Aluminum, 12 in L, 12 in W
      The Big 12A(R) is seven tools in one like a framing square, try square, miter square, protractor, saw guide, stair gauge and out-of-square corner angle finder. It's constructed of heavy-gauge aluminum alloy and includes the layout bar for use in determining out-of-square corners. Also included are the SwansonA(R) blue book for roof and stairway layout and layout bar with hardware.